sylvester



PATENTED FEB. 16, 1904..

C. O. SYLVESTER;

'WINDMILL.

APPLICATION r ILED MAY 29, 1903.

3 SHEETS-SHEET 1.

HO MODEL.

PATENTED FER 1631904;

O. O. SYLVESTER.

WINDMILL- APPLICATION FILED MAY 29, 1903.

3 SHEETS-SHEET 2.

N0 MODEL.

v I v v uarantor co. 9 50 35 are] 13 3 human) PATENTED FEB. 16, 1904.

C. O. SYLVESTER.

WINDMILL.

APPLIGATION FILED MAY 29. 1903.

H0 MODEL.

INVENTOR gylo'eai itforite ys erence characters.

: Uniren Tiaras Patented. February '16, 1904.

' CYRUS o. sYLvEs or Lsiivnswos'rn, in itsiisi I SPECIFICATION forming part of Letters Patent No. 752,128, dated Februai'gv 1.6, 1904., l Application filed May 29, 1903. Serial No. 159,338. lNomodel.) 1 I To ail whom it n z a y concern/r engines generally designated as vertical' wheel feathering-blades, the purpose being to simplify the general construction, render the mill more responsive to changes of current, both as to direction and strength, and to increase the eficiency of the mill and enable it to operate in a comparatively light wind.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and drawings hereto attached.

While the essential and characteristic features of the invention are susceptible of modification, still the preferred embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is a side view of a windmill embodying the invention, the wheels being in section. Fig. 2 is a vertical central section on the line X X of Fig. 1. Fig. 3 is a detail perspective view of a blade, wheel-shaft, and governor. Fig. i is a detail perspective view of the base supporting'the operating parts.

Corresponding and like parts are referred to in the following descriptionand indicated in all the views of the drawings by the same ref- The tower 1 may be of any ordinary construction and is provided with a vertical tube 2-, through which passes vertical shaft 3 for transmitting power from the windmill to the counter-shaft 4, from which power is taken in any convenient way, shafts 3 and 4.being connected by bevel-gearing 5. Shaft 3- is provided at its upperend with bevel-gear 6, which is in mesh with companion bevel-gears 7 and 8, applied to the inner ends of wind-wheel shafts 9 and 10. The mountings of the winwheels. governor, and actuatingmechanisin are supported in such a nianne'r'as to turn about a vertical axis, thereby permitting the windmill to automatically adjust itself to the direction of the wind, so as to receivethe fullbenefit thereof in the conversion of its forces into available form.

The framework applied to the upper end of the tower 1 comprises rectangular frame 11, standards 12, and an intermediate frame 13, from which uprights 1 L project. The shafts 9 and 10 of the wind-wheels 1'5 and 16 are jour naled in standardslQ and uprights 14: and receive opposite rotation in the operation of the engine, whereby one w'ind-wheel'acts as a I counterbalance for the other, thereby preventing throwing the blades out elf-action when the wind has not reached a dangerous velocity. The governor is centrally disposed and cooperates with both wind-wheels, and inasmuch, as the latter and the connections between the blades thereof and the governor are sub stantially alike a detailed description of one only will be given. Each of the blades 17 is mounted so as to turn to present its broad side or edge to the wind, as desired. The axis of each blade corresponds to a radius of the wheel and is located medially of the longitudinal edges of the blade. Hence the wind acts with equal'force upon both portions of the blades. A number of blades are connected in series by means of links 18, and each group is connected to a sleeve 19, slidably mounted upon the shaft of the wheel in such a manner as to cause the blades to turn to present a greater or less surfacefor the action of the Wind thereon. An elbow-lever 20' is pivoted at its angle to upright 1 k, and one armis connected with sleeve 19 and the other arm is connected by link 21 to sleeve 22, vertically movable upon guide rod or stein 23, forming a partofvertic'al shaft 3. Spiral spring 24, mounted upon stem 23, exerts downward pressure upon sleeve 22 and is confined between said sleeve and collar 25, secured tostem 23: Spring '24: normally holds blades 17 of the windwheels full in the .wind and provides yielding means to enable the blades to turn out of the wind more or less when the velocity exceeds a safe'point. A collar 26 is vspeed from any cause, the weighted ends of governor-arms 27 fly outward and pull upward upon sleeve 22 and through the connections herein stated turn blades 17 so as to present a less surface for the action of the wind. hen the speed of the engine falls below the normal or given point, spring 24 presses downward upon sleeve 22 and through the connections stated causes the blades to turn and present more surface for the action of the wind.

From the foregoing it will be understood that the wind-engine is of such construction that the force exerted by one wind-Wheel to throw the same out of the wind is neutralized by the force of the other wheel, the windwheels revolving in opposite directions, thereby permitting the engine to remain in the wind and operate in a light current. I The governor mechanism comprises Weighted arms and a counterbalancirig-spring acting in opposite directions and adapted to control the engine un-. der diflerent conditions. Hence in a light wind the blades present a maximum surface and in a gale or high wind the blades oifera minimum resistance, thereby preventing injury or total destruction of the engine, as will be readily comprehended.

4 Having thus described the invention, what is claimed as new is In a windmill, the combination of a vertical shaft, horizontal shafts in transverse alinement, gearing connecting the horizontal and vertical shafts, wind-wheels secured to the respective'horizontal shafts and provided with feathering-blades arranged to cause rotation of the wheels in opposite directions, a sleeve slidably mounted upon the said vertical shaft,

connections between said vertically-movable sleeve and the blades of the wheels, a spring for exerting a downward pressure upon said vertically movable sleeve to hold the blades in the Wind, and weighted arms pivoted between their ends upon the vertical shaft and having their short members connected with said vertically-movable sleeve to eifect upward movement thereof in opposition to the cooperating spring to throw the blades out of the Wind more or less, the weighted arms having their long members normally projected vertically, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

, CYRUS 'o. SYLVESTER.

Witnesses:

STEPHEN v; LANDRUM, JOHN W. MAXWELL. 

